Aure Chemical Delivers Reliable 4-Chlorobutyryl chloride (CAS 4635-59-0) at Consistent Quality
4-Chlorobutyryl chloride is a specialized organic intermediate widely used in fine chemical and pharmaceutical manufacturing. As an acid chloride with a terminal chloro group, it enables efficient acylation and chain elongation under controlled conditions. Aure Chemical maintains consistent quality and full documentation to support laboratory and scale-up requirements.
Basic Information
| CAS No. | 4635-59-0 |
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| EC No. | 225-059-1 |
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| Linear Formula | Cl(CH2)3COCl |
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| Molecular Weight | 141.00 |
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| Appearance | Colorless to light yellow clear liquid |
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| Melting Point | -47 °C |
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| Boiling point | 173-174 °C (lit.) |
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| Density | 1.26 g/mL at 25 °C (lit.) |
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| Solubility | Reacts with water; soluble in common organic solvents (ether, chloroform, dichloromethane) |
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| Storage Conditions | Keep in a tightly closed container in a cool, dry place under inert atmosphere. Protect from moisture and light. |
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| Chemical Structure |  |
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Key Applications
Organic synthesis intermediate: 4-Chlorobutyryl chloride serves as a reactive building block for acylation and introduction of the 4-chlorobutyl moiety in complex organic molecules.
Fine chemical intermediate: It is utilized in the preparation of specialty fine chemicals requiring precise chloro-substituted acyl functionality.
Pharmaceutical intermediate: The compound acts as a key precursor in the synthesis of pharmaceutical APIs such as fexofenadine and related derivatives.
Laboratory research: Researchers employ it in exploratory synthetic studies and methodology development involving acid chloride chemistry.
Process development: It facilitates route optimization and scale-up work in custom synthesis projects for complex organic targets.
Why Global Buyers Choose Aure Chemical
Consistent product quality: High purity specifications and consistent batch quality are ensured through routine analytical testing suitable for fine chemical sourcing.
Flexible global supply: Flexible international shipping arrangements support laboratory scale, pilot scale and bulk procurement for global customers.
SDS and COA support: Standard product documentation including SDS and COA is available upon request for sourcing, export and quality review.
Packaging and technical service: Flexible packaging options in 25L/200L HDPE drum, moisture-protected together with responsive technical communication.
